TMZ has uncovered a lawsuit by a 55-year-old Princeton graduate turned lawyer (and former basketball player in his hey-day) named Leicester Bryce Stovell, who is SUING Lebron James and his mother Gloria. This Leicester person claims he had unprotected sex with Gloria when she was 15 (and he was 29), and that he's Lebron's biological father.

Thanks to all the stories Lebron has told about his father abandoning him (the story is even played out in the movie He Got Game), an alleged tampered with DNA test, and Gloria refusing to even claim to know Leicester, dude is now suing both of them for a whopping $4 million for defamation, fraud, and misrepresentation:

In his suit, Stovell claims he has a very clear recollection of the night he had "consensual sexual relations" with Gloria -- in fact, he even remembers apologizing for his sub-par performance.

Leicester claims Gloria went back to her hometown in Ohio after they hooked up -- but returned several months later to inform him she was pregnant with a boy named LeBron ... but she never specifically identified the father.

Leicester -- a self-proclaimed high school star athlete -- says he remembers telling Gloria, "Well, if he's mine, make sure he plays basketball." He claims that was the last time he saw Gloria for more than 20 years.

According to the docs, Leicester claims he reconnected with Gloria over the phone in 2007 -- when he began to think he could be LeBron's father ... partly because they look almost identical.

Leicester claims during the 2007 phone call -- Gloria denied ever meeting him -- threatened to have him physically harmed -- and told him, "LeBron's money is for his children."

A few days after the phone call, Leicester claims LeBron -- through his lawyer -- agreed to take a DNA paternity test.

Leicester claims he was given results that showed he was not LeBron's dad ... but several months later, he began to suspect that the results were tampered with ... and Gloria and LeBron were behind the fraud.

So why would LeBron participate in such a cover-up? Leicester claims it's all, "due to anger at perceived abandonment and conflict arising from his image as a successful fatherless child from the projects."

He also claims that Gloria had "fabricated" a story about LeBron's real father for the "one dimensional commercial image-making purpose ... to make [LeBron's] life suggestive of Spike Lee's popular 1998 sports drama film, 'He Got Game.'"

Source

Here's Leicester's lawsuit docs. By the way, Lebron named his youngest son Bryce. He was born in June of 2007. And it happens to be Leicester's middle name. Coinkidink? Hmmm......